WSM Yamaha 400 Big Bear / Kodiak Piston Kit 50-541-07K .040 OVER SIZE ONLY

WSM Yamaha 400 Big Bear / Kodiak Piston Kit 50-541-07K .040 OVER SIZE ONLY

Marsoni

M251S

$78.35

Get it in 3 business days with 1 day shipping. Friday, May 29

WSM Yamaha 400 Big Bear / Kodiak Piston Kit 50-541-07K .040 OVER SIZE ONLYYamaha 400 Big Bear Kodiak Piston Kit . 040 OVER Size Only 84mm Brand : WSM Item #: 50 541 07K OEM #: 4GB 11631 00 Y0 PIN: 19mm diameter Make Model CC HP Year Yamaha Big Bear 400 2000 Yamaha Big Bear 400 2001 Yamaha Big Bear 400 2002 Yamaha Big Bear 400 2003 Yamaha Big Bear 400 2004 Yamaha Big Bear 400 2005 Yamaha Big Bear 400 2006 Yamaha Big Bear 400 2007 Yamaha Big Bear 400 2008 Yamaha Big Bear 400 2009 Yamaha Big Bear 400 2010 Yamaha Big Bear 400

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I decided to try LIQUI MOLY Valve Clean to help keep the intake valves clean and maintain engine performance, and I’m really impressed with the results. After adding it to the fuel tank and running through a full tank of gas, the engine felt noticeably smoother and more responsive. It’s very easy to use—just pour it into the fuel tank as directed. I also like that it’s from LIQUI MOLY, a brand known for high-quality automotive additives. While it’s not a miracle fix for serious mechanical issues, it’s a great preventative maintenance product to help reduce deposits and keep the engine running efficiently. I plan to use it periodically as part of my regular maintenance routine.

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Reviewed in the United States on March 7, 2026

Verified Purchase

Jack

Bozeman, US

★★★★★ 5

Must have.

Size: 150 ml, Pack of 1

Very good product, works great.

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Reviewed in the United States on May 7, 2026

Verified Purchase

Robert Cordrick

Carnegie, US

★★★★★ 5

Good for routine engine care

Size: 150 ml, Pack of 1

Definitely not a cure-all for major mechanical problems, but it works well as a preventative step. It helps lessen deposits and keeps the engine running smoothly. I intend to use it regularly as part of my maintenance schedule to keep everything in good shape.

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Reviewed in the United States on April 21, 2026

Verified Purchase

Susie

Charlottesville, US

★★★★★ 5

Worth the money

Size: 150 ml, Pack of 1

Great line of car products. My BMW gets better gas mileage when I use it regularly.

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Reviewed in the United States on April 1, 2026